Display screen with a graphic user interface



FIG. 1 is a front view of the first image in the sequence for a display screen with a graphic user interface showing my new design;

FIG. 2 is a front view of the second image thereof;

FIG. 3 is a front view of the third image thereof;

FIG. 4 is a front view of the fourth image thereof; and,

FIG. 5 is a front view of the fifth image thereof.

The broken line showings of the display screen and the broken line showings of the patterns and characters therein are for the purpose of illustrating unclaimed portions of the graphic user interface for a display screen and form no part of the claimed design. The appearance of the transitional image sequentially transitions between the images shown in FIGS. 1-5. The process or period in which one image transitions to another image forms no part of the claimed design. 

The ornamental design for a display screen with a graphic user interface, as shown and described. 